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Questions tagged [flight-controller]

The electronic component responsible for controlling a drone or model aircraft based on inputs from the receiver and outside forces acting upon the drone or model aircraft.

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What does it mean for SBUS to be an inverted protocol?

I've heard talk about how F4-based flight controllers can't natively support the SBUS receiver protocol without special circuitry. What does this mean and what hardware is needed to invert an inverted ...
ifconfig's user avatar
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10 votes
1 answer
871 views

Hover stability: PX4 vs. DJI Mavic Mini

About a year ago I started building my own drones. I've settled into Betaflight for FPV and PX4 for photography. I've never used a "real" off-the-shelf drone, being a DIY'er. Recently I saw ...
Freeman's user avatar
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8 votes
2 answers
1k views

Can I configure Betaflight in the field without using a laptop?

I often find myself wanting to make adjustments to the settings on my quadcopter in the field, especially when tuning PID settings and rate profiles. I currently bring a laptop with me wherever I go ...
ifconfig's user avatar
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8 votes
1 answer
146 views

How to visually inspect the magnitude of PID gains?

The defaults in Betaflight generally work very well, but I own and fly very different quads ranging from 2" to 6". It may easily be that there is room for little adjustments I can make with the tuning ...
3k-'s user avatar
  • 439
7 votes
2 answers
2k views

Difference between a 3 and 6 axis gyro

When shopping for drones, I see a 3 and 6 axis gyro available, what is the difference between the two? Does one have a advantage when flying over another?
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7 votes
2 answers
9k views

How to enter DFU mode on my flight controller?

How can I enter DFU mode on flight controllers, in particular on my CL Racing F4S flight controller? Ref.: https://cl-racing.myshopify.com/products/clracing-f4s
Ziem's user avatar
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7 votes
2 answers
433 views

What are the usual engineering considerations for a UAV current sensor?

Current sensors are a popular feature in both multicopter and fixed wing flight control stacks. Most of them are analog, i.e. convert the current into a voltage using a small-value shunt resistor (...
FlashCactus's user avatar
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7 votes
1 answer
793 views

what is the voltage output from the ESCs of drone motors?

the flight controller i am using is a custom one, which is a teensy 4.0 microcontroller. it cannot have more than 3.3V into its GPIO pins. I know I can use the 5V from the BEC of the ESC to power my ...
Ahmed Anwer's user avatar
7 votes
2 answers
282 views

Does the Meteor65 Acro support Spektrum RSSI?

I have a BetaFPV Meteor65 Acro with a built-in DSMX receiver. I'm wondering if the F4 1S Brushless Flight Controller V2.2 (DSMX) supports RSSI. I've seen DVR of people flying and they have an RSSI ...
2pacsawyer's user avatar
7 votes
2 answers
234 views

Drone Controller, PID Is Enough, or ODE Modeling Required?

I am planning to build a remote controlled dualcopter where I have two propellers, one on top and one on the bottom. The bottom rotor will be gimbal based for thrust vectoring. Something like this, ...
BBSysDyn's user avatar
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6 votes
3 answers
2k views

What happens if i select the wrong number of motor poles in BetaFlight?

what kind of effect has on my gear and flights to have set a different number of motor poles that I actually have installed. for example, my motors have 14 poles but I set 12 on BetaFlight or vice-...
Paulino Gomez's user avatar
6 votes
4 answers
3k views

What's the difference between F4 or F7 flight controllers?

What is the difference between the STM32F411 and the STM32F722RET6 processors in flight controllers? What are the advantages of having the F7 processor over the F4 processor?
Jacob B's user avatar
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6 votes
1 answer
2k views

Wiring a 4-in-1 ESC to an Arduino Uno

I have four brushless motors that I want to control using an Arduino Nano. I was looking at getting a 4-in-1 ESC controller similar to this one on amazon. At this point in my project, I'm more ...
James McGreivy's user avatar
6 votes
1 answer
140 views

Is my flight controller dead or can I save it?

I built a new quadcopter and was able to power up the drone with no problem when I finished. However, after flashing new firmware to my receiver and forgetting to disconnect the receiver wires from ...
Luke Crimi's user avatar
6 votes
1 answer
350 views

Working on a Quadcopter. Unsure if this flight controller supports an FS-IA6 receiver

I am really new to drone building and I have had some awful luck trying to figure out what is compatible with what. Here is the link to the AIO flight controller I chose to use for my build. It won't ...
Redgar Pro's user avatar
6 votes
1 answer
101 views

Can Reinforcement Learning be used for UAV waypoint control?

I want to make a drone which can follow static and dynamic waypoints. I am a total beginner in the drone field so I can't figure out whether I should use Reinforcement Learning or other learning ...
Ravish Jha's user avatar
5 votes
6 answers
1k views

Drones capable of smooth plane/bird-like flight

Multirotors are small rotorcraft with flight dynamics which result in an unnatural "flight experience". Are there multirotor autopilots which would be able to simulate a more "natural&...
Tomas's user avatar
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5 votes
3 answers
1k views

Can "toy" drone FC firmware be tweaked?

Can the flight controller of cheap "toy" grade quads, such as the Blade Inductrix, be programmed at all? I'd assume that even if it's possible, it wouldn't be practical. I don't have any ...
Galaxy's user avatar
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5 votes
2 answers
440 views

What is the standard setting for the Ele stick in FPV mode

I've been flying quads for quite a while both line of sight and FPV. I started with Liftoff simulator FPV where I had the settings set the way that when I move the Ele stick backwards, the drone moves ...
Andrzej Gis's user avatar
5 votes
5 answers
202 views

What are the available solutions for creating complex user-defined UAV behavior in autopilots?

Most freely available autopilot-enabled flight control hardware and firmware for hobby/consumer-grade UAVs seem to have a rather fixed feature set. There are usually varying degrees of stabilization, ...
FlashCactus's user avatar
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5 votes
2 answers
371 views

Will different brushless motor sizes work with the same flight controller and esc

I recently built a 5-inch quad using: Diatone Mamba F405 Mk2 F40 Mk2 3-6S 30x30 Stack/Combo (F4 FC / 40A 4in1 ESC) Motors: iFlight Xing-E PRO 2207 1800Kv Motor with DShot 600 and 4S battery cell. I ...
Spesemper's user avatar
5 votes
2 answers
1k views

DIY wireless mesh network to extend drone's operational range

I have stumbled upon this question regarding technology providing longest range for rc controls and would like to ask a related one. Theoretically it should be possible to build a wireless mesh ...
user1876484's user avatar
5 votes
1 answer
1k views

What is DSHOT in ESCs?

I've heard that modern quadcopters use a DSHOT protocol. Could you describe what it is? What's its purpose?
Ziem's user avatar
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5 votes
1 answer
1k views

4 in 1 ESC and FC won't turn on when connected together

After crashing my drone recently, my ESC and flight controller won't turn on (the power led lights up on the FC, but nothing else works either it doesn't anymore, or I was wrong before) any more when ...
Hannes Hultergård's user avatar
5 votes
1 answer
90 views

For a typical dual controller + companion computer UAS, is it normal to have UART only from controller, and USB only from companion computer?

When I'm reading the extension capability of 3DR Solo, I realise that its breakout board interface has some peculiar limitation. Here is the context of the entire 3DR Solo design: it is an open-source,...
tribbloid's user avatar
  • 153
5 votes
1 answer
2k views

FC won't go into boot mode

I can't get to get my FC (a JHE MCU F722 BT dual) into boot mode. I have tried: under Linux (pop-os 21.04) and win 10 pressing the boot button when powering it up via USB entering DFU mode via ...
Matthieu Kints van's user avatar
5 votes
1 answer
646 views

Installing Spektrum receiver onto AtomRC Dodo

I'm a noob who just received an Atomrc dodo, and I have a Spektrum SPM4650 receiver I need to install. The wiring diagram (below) is clear enough, but I'm new to soldering and would prefer to avoid ...
Harabeck's user avatar
  • 223
5 votes
1 answer
674 views

Control a servo through the flight controller PPM output and a ppm to pwm card

I have a quadcopter on which I want to connect a servo, I bought a ppm to multiple PWM converter to connect on the flight controller PPM output, but I don't find how to tell betaflight to control the ...
Entretoize's user avatar
5 votes
1 answer
204 views

Can I use a quadcopter AIO FC (or stack) to control a micro helicopter via Arducopter or iNAV?

I have found a lot of resources on building your own quadcopter(drone)...but none on micro helicopters. The only helicopter resources I have found were large model helicopters. However I want to ...
jar's user avatar
  • 183
5 votes
1 answer
134 views

Can you connect a mamba405-mk2 flight controller with a FrSky R-XSR receiver?

Spec for mamba405: https://ardupilot.org/plane/docs/common-mamba405-mk2.html Spec for R-XSR: https://www.frsky-rc.com/wp-content/uploads/Downloads/Manual/R-XSR/R-XSR%20ACCST%20-Manual.pdf Looking at ...
Ira Watt's user avatar
  • 161
5 votes
1 answer
455 views

What are controllers of Parrot AR drone 2?

I have a few questions about Parrot AR drone 2. Here is the official website Q1:What are the controllers for the AR drone 2? Is there a position controller (GPS), velocity controller (accelerometer), ...
DarkKnight's user avatar
4 votes
3 answers
665 views

Are the power connections for BECs of ESCs made in parallel or series with each other?

I see the 5V power pin of BECs all are connected to the flight controller, but within the flight controller, is this registered as a 4 5V batteries in series or parallel? In series would not make ...
Ahmed Anwer's user avatar
4 votes
1 answer
1k views

What's the purpose of airmode and idle up?

What are airmode and idle up and what do they do improve my freestyle flights?
ifconfig's user avatar
  • 6,008
4 votes
1 answer
854 views

Why don't solutions exist for a 3-axis helicopter flight controller?

So I've been searching around for a 3-axis flight controller for my 450-size helicopter. It seems that nearly every flight controller which is sold today is configured for solely the control of quad/...
tuskiomi's user avatar
  • 142
4 votes
1 answer
79 views

Pixahawk compatibility with high voltage digital servos

I am a novice RC member whom is doing a university project that uses a flight controller to actuate high voltage digital servos. It is part of a ducted fan rocket. The servos : https://hitecrcd.com/...
Johan M's user avatar
  • 43
4 votes
1 answer
3k views

ESC power up beeps sound twice: du-du-du...du-du-du beep-beep

Just recently, my power-up beep sounds have changed. The normal sequence is just du-du-du beep-beep for ESC power, then throttle signal, right? Now I get du-du-du, pause, du-du-du (again) beep-beep. ...
Tilman Koester's user avatar
4 votes
1 answer
368 views

Is Naze32 capable of autopilot?

(Assuming that you have the required telemetry hardware, barometer, etc...) Are any versions of the Naze32 capable of autopilot features, such as altitude hold? How about more advanced things like ...
Galaxy's user avatar
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4 votes
1 answer
159 views

Choosing ESCs for an Autonomous Drone

I'm about to build my first drone. I chose the PixHawk 4 with PX4 as a flight controller and the Raspberry Pi Model 3B as the companion computer. I am not sure about the ESCs yet. So far I'm ...
H123321's user avatar
  • 81
4 votes
2 answers
491 views

Drone which can be controlled via 4g network

Hello everyone pls I want to know if a drone can be controlled via a 4g network. Using 4g towers. This could be beneficial in sense that, it can be remotely controlled from anywhere. Also transmitting ...
Apata John's user avatar
4 votes
1 answer
147 views

My DIY Project - My motors and voltage regulator for water pump does not work at the same time

I am working on a project to make a quadrocopter that can spray liquid material. Unfortunately, I had this problem: when I give full thrust and try to activate the water pump at the same time, the ...
Hakan ONAY's user avatar
4 votes
0 answers
78 views

Correct Flight Controller mixer settings for quadcopter with non-centred Centre of Gravity

I have a HobbyKing KK2.0 Flight Controller (FC) on a quadcopter. I have been trying to work out the correct mixer settings for a new H configuration I'm trying however the documentation isn't that ...
Arj's user avatar
  • 191
4 votes
0 answers
99 views

Can I use an RX6R's PWM and SBus outputs simultaneously?

I'm looking at options to build a pan/tilt system for FPV. The FC that I have available has only 4 servo outputs, and the airplane has 3 servos. Given this, I can't run the pan and tilt through the FC....
MD88Fan's user avatar
  • 235
4 votes
0 answers
123 views

Powering the PixHawk with USB on the "Power” port

I was wondering if it is possible to power a pixhawk with an USB cable (power from a powerbank) via its "Power" port. Something like a DF13 to USB cable, maybe with a DIY cable. I just need ...
capocchione's user avatar
4 votes
0 answers
516 views

DSM from Spektrum Reciever

I am working with a Pixhawk 4 and a Spektrum AR620 receiver. The receiver has a 3x7 grid of pins labelled (-, +, S), and (Batt, 1-6). The reciever says it is a DSM2/DSMX receiver, and I want to ...
figbar's user avatar
  • 309
3 votes
3 answers
543 views

How to program drones that have old flight controllers?

I have a few components of drones like some old FCs and old ESCs and I don't want them to go to waste. Is there any way to configure a drone that I built with those parts, as I don't think the FCs are ...
Jacob B's user avatar
  • 5,792
3 votes
2 answers
2k views

Are there any alternatives to BetaFlight? [closed]

I wonder if there are any alternatives to BetaFlight. If there are any alternatives, what are their advantages and disadvantages?
Nike Dattani's user avatar
3 votes
2 answers
2k views

What is the point of a dual-gyro setup for a FC?

When looking for a flight controller for a drone build, I have seen some FCs with dual-gyros. What is the purpose of having two gyros on a FC? (Are there any advantages or disadvantages)
Jacob B's user avatar
  • 5,792
3 votes
3 answers
881 views

Beeper beeps if transmitter is turned of even if it shouldn't

I have turned off all beeper sound signals in Betaflight Configurator, but the beeper still beeps if the transmitter is turned off. I thought that that shouldn't happen when RX_LOST was turned off or ...
Hannes Hultergård's user avatar
3 votes
2 answers
6k views

How to use real DJI controller in simulator

I've got a DJI Mini 2 and I'm aware their official application (DJI Simulator) does not support it. Anyway, I wonder if I can use the real Mini 2 controller in any third-part simulator. I'm more ...
Mark's user avatar
  • 163
3 votes
1 answer
128 views

Help getting this flight controller to work with this receiever

I am working on building a drone. I have the DJI NAZA M LITE flight controller, and this receiver. The pinout for the battery and ESCS is pretty clear, but I'm not sure how I should go about ...
Simon Fox's user avatar
  • 148